Home / 7,943.21-11,921.37-3,995.59

Finding the Fourth Proportional to 7,943.21, 11,921.37 and 3,995.59

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Solution

The fourth proportional to 7,943.21, 11,921.37 and 3,995.59 is: 5,996.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,943.21 : 11,921.37 = 3,995.59 : x
  2. Step 2: Convert to fraction form
    7,943.21/11,921.37 = 3,995.59/x
  3. Step 3: Cross multiply
    7,943.21x = 11,921.37 × 3,995.59
  4. Step 4: Simplify right side
    7,943.21x = 47,632,827.17
  5. Step 5: Solve for x
    x = 47,632,827.17/7,943.21
  6. Step 6: Final answer
    x = 5,996.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.